Games Between Two Players
Kobayashi Koichi (7 win; 0 loss) vs. Hashimoto Yujiro
| Game Date and Game Description | |||||
| Black | White | Result | Replay | Download | |
 [2023-01-19] 2nd Japanese Teikei Cup Legend Tournament, round 2
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| Kobayashi Koichi 9p | Hashimoto Yujiro 9p | B+0.5 |  |
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| [2016-05-19] 65th Japanese Oza, preliminary
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| Hashimoto Yujiro 9p | Kobayashi Koichi 9p | W+4.5 | |
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| [2015-09-24] 42nd Japanese Tengen, preliminary
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| Kobayashi Koichi 9p | Hashimoto Yujiro 9p | B+5.5 | |
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| [2014-01-16] 70th Japanese Honinbo, preliminary
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| Kobayashi Koichi 9p | Hashimoto Yujiro 9p | B+1.5 | |
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| [2006-10-19] 33rd Japanese Tengen, preliminary
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| Kobayashi Koichi 9p | Hashimoto Yujiro 9p | B+6.5 | |
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| [1996-11-21] 22nd Japanese Gosei, round 1
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| Kobayashi Koichi 9p | Hashimoto Yujiro 8p | B+R | |
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| [1995-08-24] 20th Japanese Kisei, round 1
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| Kobayashi Koichi 9p | Hashimoto Yujiro 7p | B+R | |
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